/Engine/Source/Runtime/Online/Experimental/EventLoop/Public/EventLoop/EventLoopTimer.h
FTimerData ( [FTimerCallback](API\Runtime\EventLoop\EventLoop\FTimerCallback) && InCallback, [TOptional](API\Runtime\Core\IO\TOptional)< [FTimespan](API\Runtime\Core\Misc\FTimespan) > InFirstDelay, [FTimespan](API\Runtime\Core\Misc\FTimespan) InRate, bool bInRepeat )